I think it depends. I don't think I would be put off if a therapist was angry over being assaulted physically or taken for a lot of money (although one might wonder why the therapist let it get out of hand) but I do not know why they would bother getting angry over things like just how the client is or if the client did not following their advice or not changing the way the therapist thought they should or not progressing like the therapist thought they should - stuff like that is not the thing I would expect a therapist to get angry over and if they did - I would think they needed their own therapy/supervision to get their stuff out of the clients. I would really be put out if they tried to use anger to manipulate me.